31916-ZX2-003 S/PLG (ZFR6K-11E) - Overview. The 31916-ZX2-003 S/PLG (ZFR6K-11E) is a genuine Honda spark plug designed specifically for Honda marine engine systems. This essential component plays a vital role in igniting the air-fuel mixture within the engine cylinders, ensuring optimal combustion and smooth engine operation. Its robust design supports the ignition system, contributing to reliable starts and consistent engine performance.. Key Features. OEM genuine Honda component designed for marine engines.. Provides reliable ignition with a precise factory-set 1.1 mm gap.. Manufactured by NGK to meet Honda's strict quality and dimensional standards.. Ensures seamless integration with existing engine hardware and seals.. Durable trivalent metal plating offers corrosion resistance and prevents seizing.. Maintains optimal engine performance, fuel efficiency, and power output.. Why Choose Genuine OEM. Using original Honda parts like the 31916-ZX2-003 S/PLG (ZFR6K-11E) preserves the inte